subseriesdataset.java

来自「JfreeChart 常用图表例子」· Java 代码 · 共 485 行 · 第 1/2 页

     * @return The volume.
     */
    public Number getVolume(int series, int item) {
        return ((OHLCDataset) this.parent).getVolume(this.map[series], item);
    }

    /**
     * Returns the volume-value (as a double primitive) for an item within a 
     * series.
     * 
     * @param series  the series (zero-based index).
     * @param item  the item (zero-based index).
     * 
     * @return The volume-value.
     */
    public double getVolumeValue(int series, int item) {
        double result = Double.NaN;
        Number volume = getVolume(series, item);
        if (volume != null) {
            result = volume.doubleValue();   
        }
        return result;   
    }

    ///////////////////////////////////////////////////////////////////////////
    // From XYDataset
    ///////////////////////////////////////////////////////////////////////////

    /**
     * Returns the X-value for the specified series and item.
     * <p>
     * Note: throws <code>ClassCastException</code> if the series if not from a 
     * {@link XYDataset}.
     *
     * @param series  the index of the series of interest (zero-based);
     * @param item  the index of the item of interest (zero-based).
     *
     * @return The X-value for the specified series and item.
     */
    public Number getX(int series, int item) {
        return ((XYDataset) this.parent).getX(this.map[series], item);
    }

    /**
     * Returns the Y-value for the specified series and item.
     * <p>
     * Note: throws <code>ClassCastException</code> if the series if not from a 
     * {@link XYDataset}.
     *
     * @param series  the index of the series of interest (zero-based).
     * @param item  the index of the item of interest (zero-based).
     *
     * @return The Y-value for the specified series and item.
     */
    public Number getY(int series, int item) {
        return ((XYDataset) this.parent).getY(this.map[series], item);
    }

    /**
     * Returns the number of items in a series.
     * <p>
     * Note: throws <code>ClassCastException</code> if the series if not from a 
     * {@link XYDataset}.
     *
     * @param series  the index of the series of interest (zero-based).
     *
     * @return The number of items in a series.
     */
    public int getItemCount(int series) {
        return ((XYDataset) this.parent).getItemCount(this.map[series]);
    }

    ///////////////////////////////////////////////////////////////////////////
    // From SeriesDataset
    ///////////////////////////////////////////////////////////////////////////

    /**
     * Returns the number of series in the dataset.
     *
     * @return The number of series in the dataset.
     */
    public int getSeriesCount() {
        return this.map.length;
    }

    /**
     * Returns the key for a series.
     *
     * @param series  the series (zero-based index).
     *
     * @return The name of a series.
     */
    public Comparable getSeriesKey(int series) {
        return this.parent.getSeriesKey(this.map[series]);
    }

    ///////////////////////////////////////////////////////////////////////////
    // From IntervalXYDataset
    ///////////////////////////////////////////////////////////////////////////

    /**
     * Returns the starting X value for the specified series and item.
     *
     * @param series  the index of the series of interest (zero-based).
     * @param item  the index of the item of interest (zero-based).
     *
     * @return The starting X value for the specified series and item.
     */
    public Number getStartX(int series, int item) {
        if (this.parent instanceof IntervalXYDataset) {
            return ((IntervalXYDataset) this.parent).getStartX(
                this.map[series], item
            );
        }
        else {
            return getX(series, item);
        }
    }

    /**
     * Returns the ending X value for the specified series and item.
     *
     * @param series  the index of the series of interest (zero-based).
     * @param item  the index of the item of interest (zero-based).
     *
     * @return The ending X value for the specified series and item.
     */
    public Number getEndX(int series, int item) {
        if (this.parent instanceof IntervalXYDataset) {
            return ((IntervalXYDataset) this.parent).getEndX(
                this.map[series], item
            );
        }
        else {
            return getX(series, item);
        }
    }

    /**
     * Returns the starting Y value for the specified series and item.
     *
     * @param series  the index of the series of interest (zero-based).
     * @param item  the index of the item of interest (zero-based).
     *
     * @return The starting Y value for the specified series and item.
     */
    public Number getStartY(int series, int item) {
        if (this.parent instanceof IntervalXYDataset) {
            return ((IntervalXYDataset) this.parent).getStartY(
                this.map[series], item
            );
        }
        else {
            return getY(series, item);
        }
    }

    /**
     * Returns the ending Y value for the specified series and item.
     *
     * @param series  the index of the series of interest (zero-based).
     * @param item  the index of the item of interest (zero-based).
     *
     * @return The ending Y value for the specified series and item.
     */
    public Number getEndY(int series,  int item) {
        if (this.parent instanceof IntervalXYDataset) {
            return ((IntervalXYDataset) this.parent).getEndY(
                this.map[series], item
            );
        }
        else {
            return getY(series, item);
        }
    }

    ///////////////////////////////////////////////////////////////////////////
    // From SignalsDataset
    ///////////////////////////////////////////////////////////////////////////

    /**
     * Returns the type.
     *
     * @param series  the series (zero based index).
     * @param item  the item (zero based index).
     *
     * @return The type.
     */
    public int getType(int series, int item) {
        if (this.parent instanceof SignalsDataset) {
            return ((SignalsDataset) this.parent).getType(
                this.map[series], item
            );
        }
        else {
            return getY(series, item).intValue();
        }
    }

    /**
     * Returns the level.
     *
     * @param series  the series (zero based index).
     * @param item  the item (zero based index).
     *
     * @return The level.
     */
    public double getLevel(int series, int item) {
        if (this.parent instanceof SignalsDataset) {
            return ((SignalsDataset) this.parent).getLevel(
                this.map[series], item
            );
        }
        else {
            return getYValue(series, item);
        }
    }

    ///////////////////////////////////////////////////////////////////////////
    // New methods from CombinationDataset
    ///////////////////////////////////////////////////////////////////////////

    /**
     * Returns the parent Dataset of this combination.
     *
     * @return The parent Dataset of this combination.
     */
    public SeriesDataset getParent() {
        return this.parent;
    }

    /**
     * Returns a map or indirect indexing form our series into parent's series.
     *
     * @return A map or indirect indexing form our series into parent's series.
     */
    public int[] getMap() {
        return (int[]) this.map.clone();
    }

}